US 9,809,655 B2
Method of modifying nanofibrillar cellulose composition
Antti Laukkanen, Helsinki (FI); Markus Nuopponen, Helsinki (FI); and Martina Lille, Vantaa (FI)
Assigned to UPM-KYMMENE CORPORATION, Helsinki (FI)
Appl. No. 14/907,405
Filed by UPM-Kymmene Corporation, Helsinki (FI)
PCT Filed Jun. 24, 2014, PCT No. PCT/FI2014/050508
§ 371(c)(1), (2) Date Jan. 25, 2016,
PCT Pub. No. WO2015/011337, PCT Pub. Date Jan. 29, 2015.
Claims priority of application No. 20135796 (FI), filed on Jul. 26, 2013.
Prior Publication US 2016/0176989 A1, Jun. 23, 2016
Int. Cl. D21H 11/18 (2006.01); C08B 15/02 (2006.01); C08B 15/04 (2006.01); C08B 15/08 (2006.01); D21H 11/20 (2006.01); D21H 19/00 (2006.01); D21H 21/18 (2006.01); D21H 23/04 (2006.01); C09D 101/02 (2006.01); C09D 101/04 (2006.01); D21H 19/12 (2006.01); D21H 23/22 (2006.01)
CPC C08B 15/02 (2013.01) [C08B 15/04 (2013.01); C08B 15/08 (2013.01); C09D 101/02 (2013.01); C09D 101/04 (2013.01); D21H 11/18 (2013.01); D21H 11/20 (2013.01); D21H 19/00 (2013.01); D21H 19/12 (2013.01); D21H 21/18 (2013.01); D21H 23/04 (2013.01); D21H 23/22 (2013.01)] 21 Claims
 
1. A method for modifying nanofibrillar cellulose composition, comprising
preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC),
applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until first sign of negative growth of the viscosity value of the nanofibrillar cellulose.